CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated net income	$ 500,486	$ 498,390	$ 399,876
Other comprehensive income:
Foreign currency translation adjustment	(223,268)	(265,030)	65,793
Unrealized gain (loss) on investment securities, net	814	(12,925)	1,027
Unrealized gain on interest rate swaps designated as cash flow hedges, net	871	403	2,075
Employee benefit plan items, net	2,947	(12,617)	11,520
Other comprehensive income (loss)	(218,636)	(290,169)	80,415
Comprehensive income	281,850	208,221	480,291
Less: Comprehensive income attributable to noncontrolling interests	4,213	345	456
Comprehensive income attributable to shareholders	$ 277,637	$ 207,876	$ 479,835